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SCHEDULE I - CONDENSED FINANCIAL INFORMATION - Balance Sheets Additional Information (Details) - $ / shares | Sep. 30, 2025 | Sep. 30, 2024
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Condensed Balance Sheet Statements, Captions [Line Items] |  |
Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Common stock, shares authorized (in shares) | 1,000,000,000 | 1,000,000,000
Common stock, shares issued (in shares) | 33,665,258 | 34,859,033
Common stock, shares outstanding (in shares) | 33,665,258 | 34,859,033
Parent Company |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |
Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Common stock, shares authorized (in shares) | 1,000,000,000 | 1,000,000,000
Common stock, shares issued (in shares) | 33,665,258 | 34,859,033
Common stock, shares outstanding (in shares) | 33,665,258 | 34,859,033

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